Manifold nut clamp



Nov. 9 1926. 1,606,480

w. E. REILLY MANIFOLD NUT CLAMP Filed sept. 6, 192s /5 ZO /Z Patented Nov. 9, 1926.

WALTER n. REILLY, or Das MOINES, IOWA, AssIGNon, BY; DIRECT AND ivinsNE AssIGNMnNI's, To HARRY I.. DAVIDSON, or Dns MOINES; IOWA.

MANIFOLD NUT CLAMP.

Application led September 6, 1923. Serial No. 661,205.

The object of my invention is to provide a nut clamp especially adapted for use in connection with a manifold and an exhaust pipe for holding the nut connecting the same together against any possible accidental loosening, the parts being `very simple and capable of being easily manufactured for marketing the same at a comparatively low Cost.

In this connection, it may be mentioned that a nut, sometimes called a packing nut, is used for connecting the exhaust manifold of an automobile to the exhaust pipe. The nut in a great many instanceswill be- V come loose, dne to vibration of theautomobile, and it is quite' difficult to tighten the nut when the exhaust manifold and the exhaust pipe are hot, and it is my object to provide a clamp which may be slipped onto the exhaust pipe and frictionally held there insnch a manner that the projecting earsv will engage some of the surfaces of the nut" for preventing any possible rotation or loosening thereof accidentally.

'With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device. whereby the objects contemplated arev attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of my improved manifold nut clamp.

Figure 2 is a perspective view of the same showing it installed in position in combination with a kmanifold and exhaust pipe and the nut for connecting thev same together.

In the accompanying drawings, I have w, used the reference numeral 10y to indicate generally an exhaust manifold, which is provided with a screw-threaded end 11.

An exhaust pipe 12 is arranged to abut against the screw-threaded end of the manifold 10 and to vbe secured thereto by means of collar llhwhich is designed to slip onto the The collar 14 is formed with a pair of y laterally spaced ears 18. The ears 18 are connected to and formed integral with the collar 141- by means of the outwardly extendingk parts 19, and the laterally extending parts 20. l

The nut 13 is considerably larger than the pipe 12, and it is therefore necessary to provide the outwardly extending parts 19, so that the ears 18 may be brought to position where they will engage some of the surfaces of the nut 13. The ears 18 may be formed closer together than the distance across the flats of the nut 13 and the parts 2O are therefore providedy so that the ears 18 can be sprung apart for engaging `the nut 13 and thus more firmly hold it even though it may be loose on the threads 11.

.The collar 14 is placed upon the exhaust pipe 12 adjacent to the nut 13, as clearly shown in Figure 2 of the drawings.

From the construction of the parts just described, it will be seen that the nut 13 will be held against any possible rotation so long as the collar 14 is frictionally held upon the exhaust pipe 12.

The laterally extending ears rest against the surfaces of the nut 13 and thereby prevent any rotation thereof.

Without the use `of my manifold nut.

clamp, it has been found that the nut 13 often becomes loose, permitting the exhaust pipe to disconnect from the manifold or to rattle and vibrate to such an extent that it becomes a serious annoyance.

My manifold nut clamp will prevent'the nut 13 from becoming loose and will do away with the necessity of trying to tighten the same vfor holding the manifold and exhaust pipe together when the parts are hot due to the exhaust gases of the automobile engine.

Some changes may be made in the construction, arrangement and combination of the various parts of my device, without departing from the essential features and purposes of my invention, and it is my intention to cover by my claim, any modified forms of noL structure or vuse of mechanical equivalents, Which may be reasonably included Within its scope.

I claim as my invention:

ln combination with a manifold, having aV y threaded end, an exhaust pipe abutting thereagainst and a nut for holding'tliern together, a lock for the nut comprising a single strip of nietal extending around the-exhaust pipe and having perforated ears at its ends, a bolt extending Vthrough said ears for clamping said stri'pfto the exhaust pipe, a pair of ears formed on said strip of metal and eX- tending longitudinally along said exhaust pipe, portions of said ears bent radially away from said pipe and abutting against said nut and the ends of said ears bent at right angles Vto Said outwardly extending portions and initially spaced closer together than the Width oi' said nut before said lock is clamped on said'pipe whereby they resiliently engage the flats of said nut. Des Moines, IoWa,August 29, 1923.

VVAL'IERl E. REILLY. 

